Damper-operating mechanism for heating apparatus



(No Model.) a Sheets--Sheet 1.

, J. A. LAKIN.

DAMPER OPERATING MEUHANISM FOR HEATING APPARATUS. No. 322,186. PatentedJuly 14, 1885.

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(No Model.)

' 3 SheetsSheet 2. J. A. LAKIN. A

DAMPER OPERATING MECHANISM FOR HEATING APPARATUS. No. 322,186.

Patented July 14., 1885.

INVENTORZ n w WITNESSES ATTORNEY (No Model.) M 3Sheets-Shget3.

DAMPER OPERATING MECHANISM FOR HEATING APPARATUS.

No. 322,186. Patented July 14, 11

7 IN'ENTMR mn Biz/ 47 ATTORNEY N. PETERS, Pholouihugnphar, WIlhingtnn, DI;

UNrTnD STATES PATENT omct.

JAMES A. LAKIN, 0F WESTFIELD,MASSACHUSETTS.

DAMPER-OPERATING MECHANISM FOR HEATING APPARATUS.

SPECIFICATION forming part of LettersPatent No. 322,186, dated July 14,1885.

Application filed January 21, 1884. (No model.)

T0 aZZ whom it may concern:

Be it known that I, JAMES A. LAKIN, a citizen of the United States,residing at Westfield, in the county of Hampden and State ofMassachusetts, have invented new and useful Improvements inDamper-Operating Mechanism for Heating Apparatus, of which the followingis a specification. V

This invention relates to improved mechanism for-automatically operatingto open and close the doors and to regulate the cold-air supply and thedraft of furnaces and other similar heating apparatus, the objectbeingto provide means for retaining the combustioncontrolling devices ofheating apparatus in a fixed position for a predetermined period oftime, and which, at the end of said period, will automatically operatesaid devices for varying the heat of the furnace.

In the drawings forming part of this specification, Figure 1 illustratesa combination of mechanical devices connected with the dampers ofheating apparatus embodying my invention. Fig. 2 is a view, partly insection, of the clock and damper controlling mechanism directlyconnected therewith. "Fig. 3 illustrates a modification of thearrangement of the intermediate connections between the clock and thefurnace-dampers and the manner of connecting more parts with the clockthan is shown in Fig. 1.

In the drawings,Ais a clock, provided with. the usual alarm-dial,d,alarm-cam c, and substantially the ordinary alarm-train, consisting ofthe spring-and-drum wheel 17 and the wheels 18 and 16. A trip'lever, 12,is pivoted on the clock-frame, one end of which lever is adapted toengage with the stop-pins on wheel 16, and the other end of it to bearon the edge of-the Cam 0 when free to do so. Aspring, 19, operates todisengage the upper end of the lever 12 from the pins on wheel 16,and tohold its lower end against cam c, or to incline it to move upward. Asliding bar, a, is properly supported on the clock in such manner as topermit its being easily moved back and forth. The bar a is provided withgraduated marks, as shown, near which are the figures 48, 36, 24:, and12, indicating so many hours. A

pointer, 6, attached to the clock-case, has its end hanging in front ofbar a as a guide,'indieating where to move the bar, for a purposehereinafter set'forth. The lower edge of bar l in lever 12,which pinreaches under bar and while the bar is in theposition shown in Fig. l

2 prevents the lower end of said lever from bearing on cam c, and itsupper end from swinging away from the pins on wheel 16. The hour-handwheel 10 of the clock A has an arm, 15, attached to it, which is adaptedat each revolution of said wheel to engage with one of the pins 14 andslide-bar a. The usual spring, 30, on wheel 17 is arranged, in operatingthe devices shown'in Fig. 1, to wind the cord B onto the drum on theshaft, thus drawing in the cord; butin other arrangements of theintermediate devices operating between the clock and the furnace, as inFig. 3, said devices are adapted to be let go by freeing the cord-trainin the, clock and letting the cord run out. i

and g an air-door, adapted by opening it to reduce the draft and causethe fire to burn less violently, and E indicates a part of the smokepipeleading from the furnace, on which is a short arm on which is pivoted anair door or damper, 15, also adapted by opening it to reduce the drafton the furnace.

The above-named dampers y and t illustrate certain kinds of suchdevices; but it is obvious that other descriptions of oscillating or ofsliding dampers may be operated by the mechanism herein shown. The doorsor dampers y and thave attached to them, respectively, the cords to and'0, which run over the pulleys 6 and 5, and thence to the wheel m, andare attached to the periphery of a-ring, 3, formed 1 on one side of thearms of said wheel. Acord,

n, is attached to the rim of wheel m, anda 1 spring, 0, attached to anyconvenient object below the wheel, is attached to the last-named cord. Astop-lever, 7c, is pivoted near therim of wheel m, having a hook, is, onone end, adapted to engage with the teeth 4: on said wheel and preventit from being rotated when the parts are inthe position shown in Fig. 1.A lever, f, having an overhanging disk-shaped In Fig. 1, h indicates aside of the furnace,

or other suitable head, on which is a projection, z, and having an arm,J, thereon, is pivoted by the side of the stop-lever 7c. The lever fisadapted to swing over, causing the arm J to strike thelower end of lever7c, bringing said two levers to the positions shown in dotted lines f inFig. 1, whereby lever is is disengaged from wheel m, and the latter isfree to rotate by the action of spring 0 and the weight of the dampers gand t, letting the latter close, when lever f will swing to aperpendicular at f*, bringing arm J away from the lower end of lever is,leaving the latter free to again swing into engagement with the teeth on'wheel m. A lever, D, is pivoted under the clock A, to one end of whichis attached the spring 7, and to its opposite end is attached the end ofthe cord B, which winds onto the drum of the wheel 17 in the clock A.Lever D is placed in such position as to bring one end thereof directlybefore the projection 1; on lever f and hold the latter upright untilthe wheel 17 operates drawing-up cord B, when the end of said lever is11fted,lettingleverf fall, as aforesaid.

Then the apparatus is set to cause the furnace-dampers to be operated bythe clock within a few hours, or less than twelve, the sliding bar a isnot brought into action, but is moved to the left to bring theout-ofline space 8 over the pin 13 far enough to let the end of lever 12rise up and rest on the edge of the cam 0. Lever 12 being left thus, thedial d is set at the hour it is desired that the furnacedampers shall beoperated, and meanwhile the upper end of lever 12 is engaged with thepin on wheel 16, preventing the train of three wheels from turning,lever D having been brought against projection ion leverf. Said train isnow wound up, and the devices operate, as aforesaid, upon thefurnacedampers, when the hour arrives to which the dial (2 was set, bythe dropping of the lower end of lever 12 into the deep part of cam 0,and letting the said train run and liftup the end of lever D.

The furnace-dampers are set to any desired degree of opening by turningwheel m, either before or after setting the clock.

The purpose of the sliding bar a, with its space 8 therein, is toprovide a suitable stop to prevent the operation of the dampers untilafter twelve, twenty-four, or more hours, as indicated by the figures onthe bar. Therefore, when it is desired that the dampers shall be closedtwenty-four hours after the dial d is set, bar a is drawn to the rightuntil pointer 6 stands at 24. The subsequent rotation of the hour-handwheel causes the arm 15 to be brought at each revolution against one ofthe pins 14, whereby at the proper time, as above described, thetrip-lever 12 is let rise against cam c, and is by the latter made tolet ,off the train at the proper time.

In Fig. 3 the lever is connected with the oscillating damper 29 in thecold-air pipe 30 by the chain 28, with the feed-doorof the furnace 25 bythe chain 24, with the air-door27 thereof by the chain 26, and with anair-door, 22, on the smoke-pipe 23 by the chain 21, and by the movementof the outer end of said lever in the direction indicated by the arrow,when permitted by the running out of cord B from the clock A, themovement of the damper is controlled,as aforesaid. The weight on lever20 is a counterbalance to the weight of the dampers.

The lever 20 and its weight aresubstantially the equivalents of thewheel m and the spring 0, and the devices in Figs. 1 and 3 illustratedifferent means for carrying out this invention without departingtherefrom.

What I claim as my invention is- 1. A damper, a weight or its equivalentarranged to move the same when free to do so, a series of levers andconnections (as cords or chains) for controllingsaid weight, anda clockmechanism engaging one of the levers, all in combination, substantiallyas described.

2. The combination, with a clock, a pivoted lever actuated thereby, anda shifting bar, whereby the clock may operate the lever after a periodof more than twelve hours, of a triplever arranged to engage said barand a train of mechanism leading therefrom to the damper to be operated,substantially as set forth.

3. In a clock, the combination, with the dial d, the cam 0, and atrip-lever adapted to engage with said cam, of a sliding bar arranged,as described, to be moved by the clock and to control the trip-lever, sothat said bar is capable of being adjusted to permit said cam to rotateone or more times before acting on said lever, substantially as setforth.

4.. In combination with the clock A, its train of wheels 16 17 18, lever12, and cam c, the hour-wheel 10, having arm 15 thereon, the bar at,having means thereon, substantially as described, for the engagement ofsaid hour-wheel therewith, and the out-of-line space 8 in said bar, andthe pin 13 in lever 12, arranged to move into said space atthe propertime, substantially as set forth.

5. In combination, the trip-lever 12, having pin 13 thereon, the slidingbar a, having the space 8 therein, into which the pin 13 is allowed toswing by the movement of the bar, the clock A, and means,.substantia llyas described, for moving said bar periodically, substantially as setforth.

JAMES A. LAKIN.

Witnesses:

I. O. PRATT, ASA P. BAND.

